Q&A: Storage Bags or Bottles?

Are milk storage bags better than bottles?
ByErin van Vuuren
Updated
Jan 2017
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You can safely store breast milk in:

• glass or BPA-free plastic bottles with a one-piece, tight-sealing lid

• thick plastic storage bags made especially for storing human milk

For short-term storage, it may be okay to use:

• plastic bags used to line bottles (These should be double-bagged or placed in a larger freezer bag, and aren’t recommended for long term storage.)

The benefit of breast milk storage bags is that the milk can be frozen flat, saving freezer space and making for quicker thawing. However, bags can be contaminated more easily, by small tears in the bags or by water getting in during the thawing process.

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